A hook device and hoisting apparatus

Abstract

The utility model discloses a kind of hook device and hoisting equipment, relate to material transport technical field.The utility model discloses a shell assembly, first telescopic cylinder, second telescopic cylinder, first hook body and second hook body.The shell assembly has accommodating cavity, first telescopic cylinder and second telescopic cylinder are connected with shell assembly, and extend into accommodating cavity, first hook body and second hook body, respectively with shell assembly slidingly connected, first hook body is drivingly connected with first telescopic cylinder, second hook body is drivingly connected with second telescopic cylinder.First telescopic cylinder and second telescopic cylinder work, drive first hook body and second hook body to do reciprocating linear motion, to adjust the hook distance between first hook body and second hook body.Thereby, according to the length of the material to be transported Hook distance is adjusted, whereby the product applicability of hook device and the operation efficiency of material transfer can be improved, and the structure cost of hook device is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of material transportation technology, and in particular to a hook device and lifting equipment. Background Technology

[0002] In many industrial production and logistics scenarios, materials are commonly transferred using lifting hooks. Currently, most lifting hooks employ a fixed-spacing design, meaning the hook distance is constant. However, the width of the materials to be transferred varies considerably. For example, when dealing with materials whose width is much greater than the hook distance, uneven force distribution at the contact point between the lifting device and the material can easily occur, leading to unstable gripping and material swaying. Conversely, when dealing with materials whose width is much smaller than the hook distance, the hook may not be able to smoothly engage or conform to the material, making it difficult to effectively secure the material and reducing transfer efficiency.

[0003] To accommodate the transfer of materials of different lengths, multiple specifications of hooks are typically required. These hooks must be replaced with the appropriate size for each material being lifted. This reduces operational efficiency and increases the cost of the hook structure. Utility Model Content

[0004] For material transfer of different lengths, it is necessary to match the corresponding specifications of the hook, which leads to reduced operation efficiency and increased hook structure cost. This utility model is proposed to provide a hook device and lifting equipment that overcomes or at least partially solves the above problems.

[0005] Based on a first aspect of the present invention, a hook device is provided, the hook device comprising: Housing assembly having a receiving cavity; A first telescopic cylinder and a second telescopic cylinder are respectively connected to the outer casing assembly and extend into the receiving cavity. A first hook and a second hook are slidably connected to the outer shell assembly, the first hook is driven by the first telescopic cylinder, and the second hook is driven by the second telescopic cylinder. When the first telescopic cylinder and the second telescopic cylinder are working, they drive the first hook body and the second hook body to perform reciprocating linear motion, thereby adjusting the hook distance between the first hook body and the second hook body.

[0006] Based on the above technical means, the hook distance between the first hook and the second hook can be adjusted according to the length of the material to be transported, which improves the product applicability of the hook device. Furthermore, it eliminates the need for frequent switching of the hook device according to material specifications, thereby improving the efficiency of material transfer operations and reducing the structural cost of the hook device.

[0007] An optional utility model further includes: At least two first slide rails are arranged in parallel and are fixedly connected to the outer shell assembly within the accommodating cavity; At least four first sliders, each first slider being slidably connected to a first slide rail at a corresponding position, wherein at least two first sliders are fixedly connected to the first hook body, and at least two first sliders are fixedly connected to the second hook body.

[0008] Based on the above technical means, the smoothness of sliding of the first hook and the second hook can be improved, and the connection between the first hook and the second hook and the first slider can be strengthened. Therefore, under excessive load, the connection between the first hook or the second hook and the first slider will not fail, thus preventing a shortened service life of the hook device.

[0009] An optional utility model embodiment, wherein the first hook body comprises: A first connecting part is fixedly connected to the first slider. A first extension portion, which is fixed to the first connecting portion; The first hook portion is connected to the end of the first extension portion away from the first connecting portion, wherein the first connecting portion, the first extension portion, and the first hook portion cooperate to form a C-shaped structure.

[0010] Based on the above technical means, the first hook can be inserted into the bottom of the material from the side, which improves the convenience of material hoisting.

[0011] In one optional utility model, the first hook body further includes a first reinforcing rib, which is disposed through the connection between the first extension and the first hook portion.

[0012] Based on the above technical means, when the first hook bears the weight of the material, the stress on the first hook body is concentrated at the connection between the first extension and the first hook. Thus, the first hook body can be structurally reinforced by the first reinforcing rib, thereby improving the load-bearing capacity of the first hook body and preventing the first hook body from deforming or even breaking due to stress overload.

[0013] An optional utility model includes two limiting blocks in the middle region of the first slide rail. The first limiting block is used to limit the sliding stroke of the first hook, and the second limiting block is used to limit the sliding stroke of the second hook.

[0014] Based on the above technical means, the limiting block is used to limit the sliding stroke of the first hook and the second hook. Thus, the stroke of the first telescopic cylinder and the second telescopic cylinder can be controlled by mechanical hard limiting, avoiding problems such as damage to the first telescopic cylinder and the second telescopic cylinder caused by the overtravel of the first slider.

[0015] An optional utility model further includes: At least two second slide rails are arranged in parallel and are fixedly connected to the housing assembly within the accommodating cavity; At least four second sliders, each second slider being slidably connected to a second slide rail at a corresponding position, wherein at least two second sliders are fixedly connected to the first hook body, and at least two second sliders are fixedly connected to the second hook body, the first slider is located at the bottom of the first hook body, and the second sliders are located at the top of the first hook body.

[0016] Based on the above technical means, the smoothness of sliding of the first hook and the second hook can be improved, as well as the connection strength between the first hook and the first and second slide rails, and the connection strength between the second hook and the first and second slide rails. Therefore, on the one hand, problems such as positional displacement or connection failure of the first or second hook will not occur under excessive load. On the other hand, with secure positioning, problems such as positional displacement of the first or second hook, leading to axial deformation of the piston rods of the first and second telescopic cylinders, are avoided under large loads. This improves the working stability of the first and second telescopic cylinders and extends their service life.

[0017] An optional utility model involves hollowing out the interior of both the first hook and the second hook.

[0018] Based on the above-mentioned technical means, the overall weight of the first and second hooks can be reduced, achieving hook lightweighting. This also effectively reduces the load driving force requirements of the first and second telescopic cylinders, lowering energy consumption. Furthermore, the hollow design optimizes the cross-sectional shape of the hook, achieving the same rigidity requirements while reducing material usage and hook cost.

[0019] In one optional utility model, the hook device further includes a counterweight located on the outer surface of the housing assembly.

[0020] Based on the above technical means, the counterweight can prevent the hook device from tilting when it is stationary and not carrying any material. Furthermore, during material lifting or movement, it can prevent significant swaying due to inertia or wind force, thus avoiding the risk of material collision or falling.

[0021] An optional utility model embodiment includes a composite coating assembly covering the outer surface of the first hook body and / or the second hook body, wherein the composite coating assembly comprises: A zinc layer, which is metallurgically bonded to the outer surface of the first hook and / or the second hook; An epoxy primer layer is disposed on the surface of the zinc layer; A polyurethane topcoat layer is disposed on the end face of the epoxy primer layer away from the zinc layer.

[0022] Based on the above technical means, the zinc layer can encapsulate the first hook and / or the second hook, preventing moisture and oxygen from the external environment from contacting the hook surface. Furthermore, the epoxy primer layer fills the tiny pores on the zinc layer surface, further preventing moisture from the external environment from penetrating to the hook surface through these pores. Moreover, the epoxy primer layer can chemically react with the passivation film on the zinc layer surface and can also form a strong bond with the polyurethane topcoat layer through intermolecular forces. This allows for a strong adhesion between the zinc layer and the polyurethane topcoat layer, improving the interlayer bonding strength of the composite coating assembly. Furthermore, the polyurethane topcoat layer can also prevent moisture penetration from the external environment and maintain the integrity of the paint film over a long period. Therefore, the hook device can be used for extended periods in humid conditions and has excellent corrosion resistance.

[0023] An optional utility model further includes: Two displacement sensors are used to detect the movement distance of the first hook and the second hook, respectively; The controller is electrically connected to the displacement sensor, the first telescopic cylinder, and the second telescopic cylinder, respectively, so as to control the operation of the first telescopic cylinder and the second telescopic cylinder through the distance signal transmitted by the displacement sensor.

[0024] Based on the above-mentioned technical means, the moving distance of the first hook and the second hook can be detected by the two displacement sensors and transmitted to the controller. The controller determines the hook distance based on the obtained moving distance and controls the first telescopic cylinder and the second telescopic cylinder to continue to extend or shorten, so that the hook distance between the first hook and the second hook is adapted to the set hook distance for the current length of material transfer. This can improve the stability of material transfer.

[0025] In one optional utility model, the hook device further includes a lifting lug, which is installed on the top of the housing assembly or the top of the counterweight block for cooperating with the lifting assembly of the hoisting equipment.

[0026] Based on the aforementioned technical means, the lifting assembly is allowed to pass through and engage with the lifting lug via a lifting hole in the middle region, while also facilitating the assembly and disassembly of the hook device. During the operation of the lifting assembly, the position of the hook device is moved, and the materials located on the hook device can be transferred simultaneously.

[0027] Based on a second aspect of this utility model, a hoisting device is also provided, the hoisting device including the hook device as described in any of the above utility model contents.

[0028] Based on the above technical means, the hook distance between the first hook and the second hook can be adjusted according to the length of the material to be transported, which improves the product applicability of the hook device. Furthermore, it eliminates the need for frequent switching of the hook device according to material specifications, thereby improving the efficiency of material transfer operations and reducing the structural cost of the hook device.

[0029] Compared with existing technologies, this utility model includes a housing assembly, a first telescopic cylinder, a second telescopic cylinder, a first hook, and a second hook. The housing assembly has a receiving cavity. The first and second telescopic cylinders are respectively connected to the housing assembly and extend into the receiving cavity. The first and second hooks are slidably connected to the housing assembly. The first hook is drivenly connected to the first telescopic cylinder, and the second hook is drivenly connected to the second telescopic cylinder. When the first and second telescopic cylinders are working, they drive the first and second hooks to perform reciprocating linear motion, thereby adjusting the hook distance between the first and second hooks. Therefore, the hook distance can be adjusted according to the length of the material to be transported, thereby improving the product applicability and material handling efficiency of the hook device, and significantly reducing the structural cost of the hook device.

[0030] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0032] In the attached diagram: Figure 1 This is a rear view structural schematic diagram of a hook device provided in an embodiment of this application; Figure 2 This is a three-dimensional structural schematic diagram of a hook device provided in an embodiment of this application; Figure 3 This is a side view schematic diagram of a partial cross-section of a hook device provided in an embodiment of this application; Figure 4 This is a top view schematic diagram of a partial cross-section of a hook device provided in an embodiment of this application; Figure 5 This is a schematic cross-sectional view of a composite coating assembly provided in an embodiment of this application; Figure 6 This is a block diagram of the electrical connection structure of a hook device provided in an embodiment of this application.

[0033] Figure label: 10. Housing assembly; 101. Receiving cavity; 11. Lower base; 12. Upper cover; 20. First telescopic cylinder; 30. Second telescopic cylinder; 40. First hook; 41. First connecting part; 42. First extension part; 43. First hook part; 44. First reinforcing rib; 50. Second hook; 51. Second connecting part; 52. Second extension part; 53. Second hook part; 54. Second reinforcing rib; 60. First slide rail; 70. First slider; 80. Limiting block; 90. Second slide rail; 100. Second slider; 110. Counterweight; 120. Composite coating assembly; 121. Zinc layer; 122. Epoxy primer layer; 123. Polyurethane topcoat layer; 130. Displacement sensor; 140. Controller; 150. Lifting lug; 160. Vision sensor. Detailed Implementation

[0034] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0035] In many industrial production and logistics scenarios, materials are commonly transferred using lifting hooks. Currently, most lifting hooks employ a fixed-spacing design, meaning the hook distance is constant. However, the width of the materials to be transferred varies considerably. For example, when dealing with materials whose width is much greater than the hook distance, uneven force distribution at the contact point between the lifting device and the material can easily occur, leading to unstable gripping and material swaying. Conversely, when dealing with materials whose width is much smaller than the hook distance, the hook may not be able to smoothly engage or conform to the material, making it difficult to effectively secure the material and reducing transfer efficiency.

[0036] To accommodate the transfer of materials of different lengths, multiple specifications of hooks are typically required. These hooks must be replaced with the appropriate size for each material being lifted. This reduces operational efficiency and increases the cost of the hook structure.

[0037] Based on the aforementioned technical problems, this application proposes an embodiment that may include a housing assembly, a first telescopic cylinder, a second telescopic cylinder, a first hook, and a second hook. The housing assembly has a receiving cavity. The first and second telescopic cylinders are respectively connected to the housing assembly and extend into the receiving cavity. The first and second hooks are slidably connected to the housing assembly. The first hook is drive-connected to the first telescopic cylinder, and the second hook is drive-connected to the second telescopic cylinder. When the first and second telescopic cylinders operate, they drive the first and second hooks to perform reciprocating linear motion, thereby adjusting the hook distance between the first and second hooks. Thus, the hook distance can be adjusted according to the length of the material to be transported, thereby improving the product applicability and material handling efficiency of the hook device and significantly reducing the structural cost of the hook device.

[0038] Reference Figure 1-6This application provides a lifting hook device, which may include a housing assembly 10, a first telescopic cylinder 20, a second telescopic cylinder 30, a first hook body 40, and a second hook body 50. The housing assembly 10 has a receiving cavity 101. The first telescopic cylinder 20 and the second telescopic cylinder 30 are respectively connected to the housing assembly 10 and extend into the receiving cavity 101. The first hook body 40 and the second hook body 50 are slidably connected to the housing assembly 10. The first hook body 40 is driveably connected to the first telescopic cylinder 20, and the second hook body 50 is driveably connected to the second telescopic cylinder 30. When the first telescopic cylinder 20 and the second telescopic cylinder 30 are working, they drive the first hook body 40 and the second hook body 50 to perform reciprocating linear motion, thereby adjusting the hook distance between the first hook body 40 and the second hook body 50.

[0039] In this embodiment, the outer casing assembly 10 is used to protect the relevant components of the hook device. For example, the outer casing assembly 10 may include a lower base 11 and an upper cover 12. The lower base 11 has an internal hollowed-out structure to form the receiving cavity 101, and the receiving cavity 101 is sealed by the structural cooperation between the upper cover 12 and the lower base 11, thereby protecting the components located in the receiving cavity 101 from dust and water. In some embodiments, the lower base 11 and the upper cover 12 may be made of steel.

[0040] The cylinder body of the first telescopic cylinder 20 can be fixed to the housing assembly 10, and the piston rod of the first telescopic cylinder 20 can extend into the receiving cavity 101. Simultaneously, the cylinder body of the second telescopic cylinder 30 can be fixed to the housing assembly 10, and the piston rod of the second telescopic cylinder 30 can extend into the receiving cavity 101. Therefore, the first telescopic cylinder 20 and the second telescopic cylinder 30 can be installed opposite each other, and their corresponding axial directions are parallel.

[0041] The first hook 40 and the second hook 50 cooperate to form a load-bearing surface, which is used to insert into the bottom of the material to be transported and lift the material. The first hook 40 and the second hook 50 are slidable relative to the outer casing assembly 10. That is, the first hook 40 can slide along the outer casing assembly 10 under the action of an external force, and the second hook 50 can slide along the outer casing assembly 10 under the action of an external force.

[0042] The first hook 40 is driven by the first telescopic cylinder 20. This means that when the first telescopic cylinder 20 extends or retracts, it drives the first hook 40 to reciprocate linearly along the outer shell assembly 10. The second hook 50 is driven by the second telescopic cylinder 30. This means that when the second telescopic cylinder 30 extends or retracts, it drives the second hook 50 to reciprocate linearly along the outer shell assembly 10. Therefore, through the coordinated operation of the first telescopic cylinder 20 and the second telescopic cylinder 30, they can simultaneously extend or retract, allowing the first hook 40 and the second hook 50 to move closer to each other or further apart, thus achieving adjustment of the hook distance between them.

[0043] Based on the above structural design, the hook distance between the first hook body 40 and the second hook body 50 can be adjusted according to the length of the material to be transported, which improves the product applicability of the hook device. Furthermore, it eliminates the need for frequent switching of the hook device according to material specifications, thereby improving the efficiency of material transfer operations and reducing the structural cost of the hook device.

[0044] In one or more embodiments, refer to Figure 1 , Figure 2 as well as Figure 4 As shown, the hook device may further include at least two first slide rails 60 and at least four first sliders 70. At least two first slide rails 60 are arranged in parallel and are fixedly connected to the housing assembly 10 within the receiving cavity 101. Each first slider 70 is slidably connected to a corresponding first slide rail 60, wherein at least two first sliders 70 are fixedly connected to the first hook body 40, and at least two first sliders 70 are fixedly connected to the second hook body 50.

[0045] In this embodiment, at least two first slide rails 60 are fixedly connected to the outer shell assembly 10 within the accommodating cavity 101. For example, the first slide rails 60 can be fixed to the lower base 11 of the outer shell assembly 10 by welding, bolting, or other methods. The number of first slide rails 60 is adapted to the number of first sliders 70. For example, the number of first sliders 70 can be twice the number of first slide rails 60, so that for each first slide rail 60, two first sliders 70 are provided on it for sliding engagement. One of the first sliders 70 is fixedly connected to the first hook 40, and the other is fixedly connected to the second hook 50, thereby achieving sliding connection between the first hook 40 and the second hook 50 and the first slide rail 60, respectively. The parallel arrangement of at least two first slide rails 60 allows the first hook 40 and the second hook 50 to form sliding connections with at least two first slide rails 60, respectively.

[0046] Based on the above structural design, the smoothness of sliding of the first hook 40 and the second hook 50 can be improved, and the connection between the first hook 40 and the second hook 50 and the first slider 70 can be strengthened. Therefore, under excessive load, the connection between the first hook 40 or the second hook 50 and the first slider 70 will not fail, thus preventing a shortened service life of the hook device.

[0047] In one or more embodiments, refer to Figure 1 , Figure 2 as well as Figure 3 As shown, the first hook body 40 may include a first connecting portion 41, a first extension portion 42, and a first hook portion 43. The first connecting portion 41 is fixedly connected to the first slider 70, and the first extension portion 42 is fixedly connected to the first connecting portion 41. The first hook portion 43 is connected to the end of the first extension portion 42 away from the first connecting portion 41, wherein the first connecting portion 41, the first extension portion 42, and the first hook portion 43 cooperate to form a C-shaped structure.

[0048] In this embodiment, the first connecting portion 41, the first extension portion 42, and the first hook portion 43 can be an integral structure. The first extension portion 42 is located between the first connecting portion 41 and the first hook portion 43, and the first extension portion 42 is perpendicular to the first connecting portion 41. The first hook portion 43 is perpendicular to the first extension portion 42 and parallel to the first connecting portion 41. The first connecting portion 41, the first extension portion 42, and the first hook portion 43 cooperate to form a C-shaped structure, i.e., a C-shaped hook.

[0049] Based on the above structural design, the first hook 43 can be inserted into the bottom of the material from the side, which improves the convenience of material hoisting.

[0050] In some embodiments, the second hook body 50 may include a second connecting portion 51, a second extension portion 52, and a second hook portion 53. The second connecting portion 51 is fixedly connected to the second slider 100, and the second extension portion 52 is fixedly connected to the second connecting portion 51. The second hook portion 53 is connected to the end of the second extension portion 52 away from the second connecting portion 51, wherein the second connecting portion 51, the second extension portion 52, and the second hook portion 53 cooperate to form a C-shaped structure.

[0051] The second connecting portion 51, the second extension portion 52, and the second hook portion 53 can be an integral structure. The second extension portion 52 is located between the second connecting portion 51 and the second hook portion 53, and the second extension portion 52 is perpendicular to the second connecting portion 51. The second hook portion 53 is perpendicular to the second extension portion 52 and parallel to the second connecting portion 51. The second connecting portion 51, the second extension portion 52, and the second hook portion 53 cooperate to form a C-shaped structure, that is, to form a C-shaped hook.

[0052] Based on the above structural design, the second hook 53 can be inserted into the bottom of the material from the side, which improves the convenience of material hoisting.

[0053] In one or more embodiments, refer to Figure 2 and Figure 3 As shown, the first hook body 40 may further include a first reinforcing rib 44, which is disposed through the connection between the first extension 42 and the first hook part 43.

[0054] In this embodiment, the first reinforcing rib 44 is disposed through the connection between the first extension 42 and the first hook 43. This can be understood as the two ends of the first reinforcing rib 44 being flush with the two ends of the connection between the first extension 42 and the first hook 43. The first reinforcing rib 44, the first extension 42, and the first hook 43 are an integral structure.

[0055] Based on the above structural design, when the first hook 43 bears the weight of the material, the stress on the first hook body 40 is concentrated at the connection between the first extension 42 and the first hook 43. Thus, the first hook body 40 can be structurally reinforced by the first reinforcing rib 44, thereby improving the load-bearing capacity of the first hook body 40 and preventing the first hook body 40 from deforming or even breaking due to stress overload.

[0056] In some embodiments, the second hook 50 may further include a second reinforcing rib 54, which is disposed through the connection between the second extension 52 and the second hook portion 53.

[0057] In this embodiment, the second reinforcing rib 54 is disposed through the connection between the second extension 52 and the second hook 53. This can be understood as the two ends of the second reinforcing rib 54 being flush with the two ends of the connection between the second extension 52 and the second hook 53. The second reinforcing rib 54, the second extension 52, and the second hook 53 are an integral structure.

[0058] Based on the above structural design, when the second hook 53 bears the weight of the material, the stress on the second hook body 50 is concentrated at the connection between the second extension 52 and the second hook 53. Thus, the second hook body 50 can be structurally reinforced by the second reinforcing rib 54, thereby improving the load-bearing capacity of the second hook body 50 and preventing the second hook body 50 from deforming or even breaking due to stress overload.

[0059] In one or more embodiments, refer to Figure 2 and Figure 4 As shown, two limiting blocks 80 are also provided in the middle area of ​​the first slide rail 60. The first limiting block 80 is used to limit the sliding stroke of the first hook 40, and the second limiting block 80 is used to limit the sliding stroke of the second hook 50. The limiting blocks 80 can be fixed to the housing assembly 10 by bolts or to the first slide rail 60. By using the limiting blocks 80 to limit the sliding stroke of the first hook 40 and the second hook 50, the stroke of the first telescopic cylinder 20 and the second telescopic cylinder 30 can be controlled through mechanical hard limiting, avoiding problems such as damage to the first telescopic cylinder 20 and the second telescopic cylinder 30 due to overtravel of the first slider 70.

[0060] In one or more embodiments, refer to Figure 1 , Figure 2 and Figure 4As shown, the hook device further includes at least two second slide rails 90 and at least four second sliders 100. The at least two second slide rails 90 are arranged in parallel and are fixedly connected to the housing assembly 10 within the receiving cavity 101. Each second slider 100 is slidably connected to a corresponding second slide rail 90, wherein at least two second sliders 100 are fixedly connected to the first hook body 40, and at least two second sliders 100 are fixedly connected to the second hook body 50. The first slider 70 is located at the bottom of the first hook body 40, and the second sliders 100 are located at the top of the first hook body 40.

[0061] In this embodiment, at least two second slide rails 90 are fixedly connected to the outer shell assembly 10 within the accommodating cavity 101. For example, the second slide rails 90 can be fixed to the upper cover 12 of the outer shell assembly 10 by welding, bolting, or other methods. The number of second slide rails 90 is adapted to the number of second sliders 100. For example, the number of second sliders 100 can be twice the number of second slide rails 90, so that for each second slide rail 90, two second sliders 100 are provided on it for sliding engagement. One of the second sliders 100 is fixedly connected to the first hook 40, and the other is fixedly connected to the second hook 50, thereby achieving sliding connection between the first hook 40 and the second hook 50 and the second slide rail 90, respectively. The parallel arrangement of at least two second slide rails 90 allows the first hook 40 and the second hook 50 to form sliding connections with at least two second slide rails 90, respectively.

[0062] The first slider 70 is located at the bottom of the first hook 40, and the second slider 100 is located at the top of the first hook 40. That is, for a single first hook 40 or second hook 50, its top is slidably connected to at least two second slide rails 90 via at least two second sliders 100. Its bottom is slidably connected to at least two first slide rails 60 via at least two first sliders 70.

[0063] Based on the above structural design, the smoothness of sliding of the first hook 40 and the second hook 50 can be improved, as well as the connection strength between the first hook 40 and the first slide rail 60 and the second slide rail 90, and the connection strength between the second hook 50 and the first slide rail 60 and the second slide rail 90. Therefore, on the one hand, it prevents the first hook 40 or the second hook 50 from shifting position or failing under excessive load. On the other hand, by firmly limiting the position, it avoids the first hook 40 or the second hook 50 from shifting position under heavy load, thus preventing axial deformation of the piston rods of the first telescopic cylinder 20 and the second telescopic cylinder 30. This improves the working stability of the first telescopic cylinder 20 and the second telescopic cylinder 30 while extending their service life.

[0064] In one or more embodiments, the interiors of the first hook 40 and the second hook 50 are hollowed out.

[0065] In this embodiment, the internal hollowing-out design of the first hook body 40 and the second hook body 50 can reduce the overall weight of the first hook body 40 and the second hook body 50, achieving hook lightweighting. It can also effectively reduce the load driving force requirements of the first telescopic cylinder 20 and the second telescopic cylinder 30, reducing energy consumption. Furthermore, the hollowing-out design can optimize the cross-sectional shape of the hook body, achieving the same rigidity requirements while reducing material usage and hook body cost.

[0066] In one or more embodiments, refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the hook device also includes a counterweight 110, which is located on the outer surface of the housing assembly 10.

[0067] In this embodiment, the counterweight 110 can be fixedly connected to the top of the upper cover 12 of the outer casing assembly 10 by welding or bolting. The counterweight 110 prevents the hook device from tilting when it is stationary and not carrying any material. Furthermore, during material lifting or movement, it prevents significant swaying due to inertia or wind force, thus avoiding the risk of material collision or falling.

[0068] In some embodiments, the counterweight 110 can be a cuboid structure, and its cross-sectional shape is consistent with that of the upper cover 12. This can improve the uniformity of the structural distribution of the counterweight 110, while also increasing the contact area with the outer shell assembly 10, thereby improving the connection strength between the counterweight 110 and the outer shell assembly 10.

[0069] In one or more embodiments, refer to Figure 5 As shown, the outer surface of the first hook body 40 and / or the second hook body 50 is covered with a composite coating assembly 120, wherein the composite coating assembly 120 may include a zinc layer 121, an epoxy primer layer 122, and a polyurethane topcoat layer 123. The zinc layer 121 is metallurgically bonded to the outer surface of the first hook body 40 and / or the second hook body 50. The epoxy primer layer 122 is disposed on the surface of the zinc layer 121. The polyurethane topcoat layer 123 is disposed on the end face of the epoxy primer layer 122 away from the zinc layer 121.

[0070] In this embodiment, the composite coating assembly 120 may wrap around the outer surface of the first hook 40. In other examples, the composite coating assembly 120 may wrap around the outer surface of the second hook 50. In still other examples, the composite coating assembly 120 may also form a coating on the outer surfaces of both the first hook 40 and the second hook 50.

[0071] The composite coating assembly 120, from the inside out, sequentially includes a zinc layer 121, an epoxy primer layer 122, and a polyurethane topcoat layer 123. The zinc layer 121 is metallurgically bonded to the outer surface of the first hook body 40 and / or the second hook body 50. This metallurgical bonding may include, but is not limited to, hot-dip galvanizing. The thickness of the zinc layer 121 may be greater than or equal to 80 micrometers.

[0072] The epoxy primer layer 122 refers to a structure of a certain thickness formed by using an epoxy primer. An epoxy primer is a two-component protective coating formed by using epoxy resin as the core film-forming substance, combined with a curing agent, and cured through a chemical cross-linking reaction. For example, epoxy primers can include, but are not limited to, epoxy zinc-rich primers and epoxy anti-corrosion primers. The epoxy primer layer 122 can be bonded to the zinc layer 121 by spraying or brushing.

[0073] The polyurethane topcoat layer 123 is disposed on the end face of the epoxy primer layer 122 away from the zinc layer 121, and can be bonded to the epoxy primer layer 122 by spraying or brushing. The polyurethane topcoat layer 123 refers to a structure of a certain thickness formed by using polyurethane topcoat. Polyurethane topcoat is a high-performance protective and decorative coating formed by a film-forming substance with polyurethane resin as its core, through cross-linking reaction with a curing agent or single-component self-curing. For example, polyurethane topcoat can include, but is not limited to, two-component polyurethane topcoats and single-component polyurethane topcoats.

[0074] Based on the above structural design, the zinc layer 121 can encapsulate the first hook 40 and / or the second hook 50, preventing moisture and oxygen from the external environment from contacting the hook surface. Furthermore, the epoxy primer layer 122 fills the tiny pores on the surface of the zinc layer 121, further preventing moisture from the external environment from penetrating to the hook surface through these pores. Moreover, the epoxy primer layer 122 can chemically react with the passivation film on the surface of the zinc layer 121 and can also form a strong bond with the polyurethane topcoat layer 123 through intermolecular forces. This allows for a strong adhesion between the zinc layer 121 and the polyurethane topcoat layer 123, improving the interlayer bonding strength of the composite coating assembly 120. Furthermore, the polyurethane topcoat layer 123 can also prevent moisture penetration from the external environment and maintain the integrity of the paint film over a long period. Therefore, the hook device can be used for extended periods in humid conditions and has excellent corrosion resistance.

[0075] In one or more embodiments, refer to Figure 1 , Figure 2 as well as Figure 6 As shown, the hook device may further include two displacement sensors 130 and a controller 140. The two displacement sensors 130 are used to detect the moving distance of the first hook body 40 and the second hook body 50, respectively. The controller 140 is electrically connected to the displacement sensors 130, the first telescopic cylinder 20, and the second telescopic cylinder 30, respectively, and can control the operation of the first telescopic cylinder 20 and the second telescopic cylinder 30 through the distance signal transmitted by the displacement sensors 130.

[0076] In this embodiment, the first displacement sensor 130 is used to detect the moving distance of the first hook 40, and the second displacement sensor 130 is used to detect the moving distance of the second hook 50. The displacement sensor 130 can be a type such as a magnetic grating absolute encoder. For example, the displacement sensor 130 may include a magnetic grating ruler and a reading head. The magnetic grating ruler is fixed to the lower base 11 of the housing assembly 10 and is parallel to the length direction of the first slide rail 60, its length covering the stroke of the first telescopic cylinder 20 or the second telescopic cylinder 30. The reading head is fixed to the first slider 70, or to the first hook 40 or the second hook 50, thereby ensuring that when the first hook 40 or the second hook 50 performs reciprocating linear motion, the reading head and the magnetic grating ruler remain directly opposite each other, and the reading head can read the position encoding information on the magnetic grating ruler during movement.

[0077] The controller 140 controls the operating status of the electrical components of the hook device and is electrically connected to the displacement sensor 130, the first telescopic cylinder 20, and the second telescopic cylinder 30. Thus, the hook distance between the first hook 40 and the second hook 50 is determined by the displacement signals of the first hook 40 and the second hook 50 detected by the two displacement sensors 130. The controller 140 can compare this hook distance with the material-set hook distance to control the operation of the first telescopic cylinder 20 and the second telescopic cylinder 30. For example, it can control the first telescopic cylinder 20 and the second telescopic cylinder 30 to continue extending or shortening, so that the hook distance between the first hook 40 and the second hook 50 is adapted to the set hook distance for material transfer of the current length. The material-set hook distance can be pre-configured by the operator based on the material length.

[0078] Based on the above structural design, the moving distance of the first hook 40 and the second hook 50 can be detected by the two displacement sensors 130 and transmitted to the controller 140. The controller 140 determines the hook distance based on the obtained moving distance and controls the first telescopic cylinder 20 and the second telescopic cylinder 30 to continue to extend or shorten, so that the hook distance between the first hook 40 and the second hook 50 is adapted to the set hook distance for material transfer of the current length. This can improve the stability of material transfer.

[0079] In one or more embodiments, refer to Figure 2 , Figure 3 as well as Figure 4As shown, the hook device may further include a vision sensor 160, which is electrically connected to the controller 140. The vision sensor 160 can be located on the open side of the first hook body 40, allowing it to detect an image of the material when the hook device approaches the material to be transferred. The image of the material can be displayed, facilitating the operator to determine the hook distance based on the visually observed image. In some embodiments, the vision sensor 160 may be a 3D laser profilometer or similar device.

[0080] In one or more embodiments, the controller 140 may be enclosed in an internal housing, and an anti-condensation heating device may be built into the internal housing to ensure that the hook device can operate reliably in a high humidity environment.

[0081] In one or more embodiments, refer to Figure 1 , Figure 2 as well as Figure 3 As shown, the hook device also includes a lifting lug 150, which is installed on the top of the outer casing assembly 10 or the top of the counterweight block 110 for use with the lifting assembly of the hoisting equipment.

[0082] In this embodiment, the lifting lug 150 can be fixedly connected to the top of the upper cover 12 of the outer shell assembly 10 or the top of the counterweight 110 by welding. The lifting lug 150 can be a ring-shaped structure. The lifting assembly is allowed to pass through the lifting hole in the middle region of the lifting lug 150, facilitating the assembly and disassembly of the hook device. When the lifting assembly is working, the position of the hook device is moved, and the material on the hook device can be transferred simultaneously.

[0083] This application also discloses a hoisting device, which may include a hook device as described in any of the above-mentioned application embodiments.

[0084] In this embodiment of the application, the hoisting equipment may include one of the following types: pneumatic hoist, boom hoisting equipment, and gantry hoisting equipment, etc.

[0085] In summary, this application discloses a hook device and lifting equipment. This application embodiment may include a housing assembly 10, a first telescopic cylinder 20, a second telescopic cylinder 30, a first hook body 40, and a second hook body 50. The housing assembly 10 has a receiving cavity 101. The first telescopic cylinder 20 and the second telescopic cylinder 30 are respectively connected to the housing assembly 10 and extend into the receiving cavity 101. The first hook body 40 and the second hook body 50 are slidably connected to the housing assembly 10. The first hook body 40 is driveably connected to the first telescopic cylinder 20, and the second hook body 50 is driveably connected to the second telescopic cylinder 30. When the first telescopic cylinder 20 and the second telescopic cylinder 30 are working, they drive the first hook body 40 and the second hook body 50 to perform reciprocating linear motion, thereby adjusting the hook distance between the first hook body 40 and the second hook body 50. Therefore, the hook distance can be adjusted according to the length of the material to be transported, thereby improving the product applicability and material handling efficiency of the hook device, and significantly reducing the structural cost of the hook device.

[0086] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0087] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible. Therefore, any combination of the above embodiments is an implementation scheme of this utility model. However, due to space limitations, this specification will not describe them in detail here.

[0088] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0089] Similarly, it should be understood that, in order to simplify the present invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the present invention above, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0090] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A hook device, characterized in that, The hook device includes: A housing assembly (10) having a receiving cavity (101); The first telescopic cylinder (20) and the second telescopic cylinder (30) are respectively connected to the outer shell assembly (10) and extend into the receiving cavity (101); The first hook (40) and the second hook (50) are slidably connected to the outer shell assembly (10), respectively. The first hook (40) is drivenly connected to the first telescopic cylinder (20), and the second hook (50) is drivenly connected to the second telescopic cylinder (30). When the first telescopic cylinder (20) and the second telescopic cylinder (30) are working, they drive the first hook body (40) and the second hook body (50) to perform reciprocating linear motion, so as to adjust the hook distance between the first hook body (40) and the second hook body (50).

2. The hook device according to claim 1, characterized in that, The hook device also includes: At least two first slide rails (60) are arranged in parallel and fixedly connected to the housing assembly (10) within the receiving cavity (101); At least four first sliders (70), each first slider (70) is slidably connected to the first slide rail (60) at the corresponding position, wherein at least two first sliders (70) are fixedly connected to the first hook body (40), and at least two first sliders (70) are fixedly connected to the second hook body (50).

3. The hook device according to claim 2, characterized in that, The first hook body (40) includes: The first connecting part (41) is fixedly connected to the first slider (70); The first extension (42) is fixed to the first connecting part (41); The first hook (43) is connected to the end of the first extension (42) away from the first connecting part (41), wherein the first connecting part (41), the first extension (42) and the first hook (43) cooperate to form a C-shaped structure.

4. The hook device according to claim 3, characterized in that, The first hook body (40) also includes a first reinforcing rib (44), which is disposed through the connection between the first extension (42) and the first hook (43).

5. The hook device according to claim 2, characterized in that, Two limiting blocks (80) are also provided in the middle area of ​​the first slide rail (60). The first limiting block (80) is used to limit the sliding stroke of the first hook (40), and the second limiting block (80) is used to limit the sliding stroke of the second hook (50).

6. The hook device according to claim 2, characterized in that, The hook device also includes: At least two second slide rails (90) are arranged in parallel and are fixedly connected to the housing assembly (10) within the receiving cavity (101); At least four second sliders (100) are provided, each second slider (100) being slidably connected to a corresponding second slide rail (90), wherein at least two second sliders (100) are fixedly connected to the first hook body (40), and at least two second sliders (100) are fixedly connected to the second hook body (50), the first slider (70) is located at the bottom of the first hook body (40), and the second sliders (100) are located at the top of the first hook body (40).

7. The hook device according to claim 1, characterized in that, The first hook body (40) and the second hook body (50) have hollowed-out interiors.

8. The hook device according to claim 1, characterized in that, The hook device also includes a counterweight (110) located on the outer surface of the housing assembly (10).

9. The hook device according to claim 1, characterized in that, The outer surfaces of the first hook body (40) and / or the second hook body (50) are covered with a composite coating assembly (120), wherein the composite coating assembly (120) comprises: A zinc layer (121) is metallurgically bonded to the outer surface of the first hook body (40) and / or the second hook body (50); An epoxy primer layer (122) is disposed on the surface of the zinc layer (121); A polyurethane topcoat layer (123) is disposed on the end face of the epoxy primer layer (122) away from the zinc layer (121).

10. The hook device according to claim 1, characterized in that, The hook device also includes: Two displacement sensors (130) are used to detect the moving distance of the first hook (40) and the second hook (50) respectively; The controller (140) is electrically connected to the displacement sensor (130), the first telescopic cylinder (20), and the second telescopic cylinder (30) respectively, so as to control the first telescopic cylinder (20) and the second telescopic cylinder (30) to work through the distance signal transmitted by the displacement sensor (130).

11. The hook device according to claim 8, characterized in that, The hook device also includes a lifting lug (150), which is installed on the top of the housing assembly (10) or the top of the counterweight (110) for use with the lifting assembly of the hoisting equipment.

12. A hoisting device, characterized in that, The hoisting equipment includes a hook device as described in any one of claims 1-11.

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